/Engine/Plugins/Experimental/ChaosFlesh/Source/ChaosFleshEngine/Public/DataInterfaces/DIFleshDeformer.h
Gathers permutation bits for each invocation. This is called before any calls toAllocateResources()because we validate all requested shaders before doing any further work.
virtual void GatherPermutations ( [FPermutationData](API\Plugins\ComputeFramework\ComputeFramework\FComputeDataProviderRenderProxy\FPermutationData) & InOutPermutationData ) const